56784631920 has 160 divisors (see below), whose sum is σ = 189611864064. Its totient is φ = 14016921600.

The previous prime is 56784631907. The next prime is 56784631933. The reversal of 56784631920 is 2913648765.

It is an interprime number because it is at equal distance from previous prime (56784631907) and next prime (56784631933).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5200 + ... + 337040.

It is a 1-persistent number, because it is pandigital, but 2⋅56784631920 = 113569263840 is not.

Almost surely, 2^56784631920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56784631920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94805932032).

56784631920 is an abundant number, since it is smaller than the sum of its proper divisors (132827232144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56784631920 is a wasteful number, since it uses less digits than its factorization.

56784631920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331911 (or 331905 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 56784631920 in words is "fifty-six billion, seven hundred eighty-four million, six hundred thirty-one thousand, nine hundred twenty".